Event Description: With increasing heterogeneity in system deployments (CPUs, GPGPUs, AI accelerators, FPGAs, IPU/DPUs), HPC users face a daunting task of programming for such diverse architectures. This BoF, organized by the IXPUG, but not limited to Intel technology, will focus on sharing expertise in portable programming across a wide variety of architectures, running a diverse set of workloads. This BoF will explore current approaches and best practices for programming across heterogeneous systems and exotic architectures, with the goal of identifying a common set of principles and practices that can be leveraged to develop and maintain software across sites, architectures, and applications.